new WMP problem

hey i recently downloaded the new version of WMP and i've got a lil' problem. I use WMP only to play the movies and music videos that i have and two of my music videos are not playing on the new WMP, but they did play on the old one. The sound still goes, but the video feed starts and then completely stops after 2 or 3 seconds. I can't tell any difference between these videos and all of my other ones, any suggestions?
thanks!